Tool for cutting grooves



May 17, 1932 c. Hf CLEVELAND ET AL 1,858,852

TOOL FOR CUTTING GROOvEs Filed Aug. 5, 1929 2 SheetSfSheel', 1

n ma

CHARLES, HG/ EVELAND OHARLESA. HE/NE JOHN TALL/50N f AT1-ORNE Ys May 17, 1932 c. H. CLEVELAND ET Al. 1,858,852

TOOL FOR CUTTING GROOVES Filed Aug. 5, 1929 2 Sheets-sheet 2 I' N VEN TORS CHARLES H. CLEVELAND CHARLEsA. HEI/VE Jol-1N 72A z L/so/v A TTORNEYS Patented May 17, 1932 v 39m31.915snicrnimrnupfeinnnnsLAL-HEHE, AND JOHN T, 4LLIsoN,foFM1NNnA1oL1fs, i

',KAMVINNESOTA. 'f

29931703 CUTTING Gnovns *AppiiesionrfiiedSAugnstgs, 1929. sepriai- No.3s3,544.`

i'lhislinvention' relatesrtoan A'improved':tool

.foricutting annular groves/,vY :adapted l to re- .tain` asuitablef'locksring. "i

An ob-'ect of the invention is to lprovide atooliforrcutting grooves such, `for example, as.I are used ini-connection i with certain types of wrist 11p-in bea-rings, adapted to receive a.

plockfring, thef-latter@unctioninggg to rlimit :movement :of 'the wrist vupin vin aits' bearings.

fAlu-rtherfob'ject :iskto provide a'tooly of the v'class'ilescribed, Comprising an'arbor adapted to be inserted in albear-irng' andadaptedffor rotation therein', saidfto'olwbeing provided with fgroovecuttingfelementsfand".means .for

'feedingf'said elementsiina radial direction witlirespect ltoit-he .axis of the arbor, vto cause the cutting-terminals ithereoflto engage' 'the bore-of" thefbearing and cut-grooves' therein.

EAfffurther Objectis to'provide:` a tool'ffor lcutting grooves inpistonbearings,v comprisingt\vo--:cutti ng `elements' normallyhaving theirV -cuttin lterminals 4situated below lthe peripherysoi the .arborltoapermit insertion kof the arborfintofthe bearings, andzmeansbeing provided 1 :at lone fend :'of the arborl to cause the; elements to tbe" Yfedioutwardly in a direc- 4'tionto 'cause the cutting terminals-thereof to `eng-agethe v.bores of' the-bearings and cut annularl 'f jrooves-l therein vsuitable lock. rings.

Features of'thelinventionfresidefin'the simplicity ofvjthe tool; .infthem'eans provided jfor sim.ulta-neou'sly"`feedingI Ithe :two cutting lele-ments outwardly to enga e thewo'lrk; and v'in lthe meansffor aliiirig-"t e elements with thework; v y

Other 'objects oflthevinvention 'will appear adapted to receive panyingdrawin'gsialidwill' be pointed ont lin the annexed claims'. Y n -Iriy the "accompanyingdrawings; there has 'been'j 'disclosed Y a structurer designed to 'carry ,out'hex various obj eetso'f I'the?invention;but

it' isto 4be 'understood that ,the invention is 'notl conindto the exact" features shownas various -"changes 'mayl Abe made within "the scope fj'the'fcla'irns Awhich follow,

'Y1-1n .fthefdrawings f Figures 1 -isif al. sectional elevation `showing I fthe .improved ltoolpositioned:inthe wristpin bearings of a pistonwith the-gcutting'elenients in retractedposition; t Y, Figure y2 1s a view similar to Figure l,

showing .the cutting yelements moved. l.out-

wardly to cause the terminals thereoflto cut grooves Ain 'the `bearings i of lthe piston ;v

I Figure f3isa. plan viewvof .the tool irre-r.

inovedvfroin thebearings; Y f

';:Figure4 fsfa Vcross-sectional view on'th line '4 4 ofFigure 2, showing' only the tool; 'Figuref is aY perspective view showing the cam mem-ber adapted toi feed -thefele-y ments into and out ofthe work; r

Figure Gis a detail sectional view fon"the l `linee-#6 of Figure V1;7 and Figure 7 i is faV detail sectional view-fshow inga portionof` a piston bearing and one end of a wrist pin mountedtherein, anda lock ring adapted to." prevent `longitudinal movement of the wrist pin` The novel tool featured'in thi'sinventio 'comprises anarborZlhaving alcrankhanf f 'dle 3 suitably secured to'one-end `thereof` by means ofwhicli the arborniaybe rotated, whenmounted in tliepiston bearings as here shown.' Collars 4 are ydemountably secured to the a'rbor '2 by such' means asscrews 5- and prevent longitudinal movement ofthe arbor 2 while the `tool is being Operated. y

' The tool is here shown as having twocutingly shaped notches ,12, providedontheelel eo ments 6', as best shown-inFigures 4 an'dl.v

The top and'bottomwalis of Vthe notches 12 are shaped to` correspond to theglnclinations of ,thev reducedy portions and l1, so'that whenV fthe slide`8 is moved' longitudinally in' the guide'groove 13provided in the arborQ, the elements 6` will 4be moved transversely with respectv tothe arbor Av threaded stemde-limone endwsecured ,l

to .one endofitlie` slide 8 by-mean'slof Sasuitv-sumed that the `piston -ting elements are then properly adjusted withrespect to the outer faces Vofthe bearings as shown in Figure 1, after whichthe collars 4 aremoved longitudinally uponthe arbor until they are brought into engage- ,ment with the outer faces of the wrist pin bearings; The `collars, are then secured-to the arbor 2Vby the screws 5, whereupon the tool is re-ady for cutting the grooves.v

To cut thegrooves, the mechanic will grasp the Vcrank handle 3 with one hand and the knurled nut 17 with. the other,it being asis securely held by such means as a vise. As the arbor Q is rotated in the wrist pin bearings, the element J v6 will be fed in a-direction to cause the cut-- tingterminals 7 thereof to engagethe inner surfaces of the bearings and cut annular grooves therein. This results because of the knurled nut 17 being held stationary andthe threaded stem 14 rotating withthe arbor,

thereby causingthe `stem 14 and the slide 8 to be moved longitudinally with respect to the arbor, resulting in the inclined faces 18 offthereduced vportions 9 and 11 feeding the elements into the work simultaneously as the arbor is being rotated. As soon as thegrooves have been cutto the-proper depth as shown in Figurel 2, the operator will rotate the knurled nut 17 upon the threaded stem 14 `in a direction to cause it to move away from n the end ofthe arbor, aftenwhich the nut Ki U 17, stem 14` and slide8 may bemoved in a direction towards the right, when viewing tl e tool as shown rin Figures 1 and 2, thereby causing theslide to be returned tothe position shown in Figure 1, whereupon the collar 4.atthe left hand sidevof 'the figure will be released from the arbor to permitthe arbor to be removed from the bearings.

In actual operation, the collar 4, shown at the left hand side in Figures 1 and 2, may

be dispensed with if desired, in which case the operator or mechanic, when starting the operation of cutting the grooves, will exert a slight pressure against the crank handle 3 in a direct-ion towards the pistonfso as to hold thecollar 4 adj acentto the crank handle,

in engagement with-the endof the bearing as shown in Figures 1 .and 9..v ,Howeveig to prevent accidental longitudinal movement of the arbor` in the wrist pin be`arings,.when cutvting the grooves, both'collars 4 areused asY hereinbefore. stated, thuslposltively retaining time, resulting in the work being greatly eX- pedited. A The means for feeding the elements 6in1-to and out of the-*work is very simple in construction and comprises few parts. The elements 6 are preferably constructed from suitablerod material and are therefore cylindrical in cross-section so that they may readily be supported in the cylindrical guides 19, provided in the arbor 2, as shown in Figures 1 and Q. The slide 8--is retained in the guide groove 13 by a suitable screw;20, shownin Figures 1, 2, and 3. v

Figuref? is a detail sectional view showing a bearing 21 ofa piston with a groove 22 cut in the bore thereof and a lock ring 23 mounted in the groove. The depth of the groove 22is such that the lock ring yprojects into the bore of the bearing so as to engage the end of the wrist pin 24v and thus retain the wrist pin in `the bearing.

We claim as our invention: Y

1. In a tool of the class described, the combination of an arborhaving spaced v,apart transverse sockets therein, cutting elements movablymounted in said sockets, said arbor also having a longitudinal groove therein, a slide mounted in said grooveand havinginclined portions engageable with said elements, means for actuating said slide whereby the cutting elements may be moved relative to the arbor, and said. longitudinal i groove v.being open at one side toreceive said slide.

2.v In a tool of the class described, the combinationof an arbor having spaced apart sockets therein, cutting elements movably mounted in said sockets, said arbor also having` an open groove therein extending lengthwise thereof, the overall length of 'which is less than the overall length of the arbor a slide mounted in Vsaid groove and having inclined portions engageable with-said elements, a stem connected with said slide and projecting from one end of said arbor, and a nut received in threaded engagement with said stem whereby the stem may be actuated to move said slide for the purpose of adjusting the cutting elements, said nut being inseparably connected with said stem. y I

. l3. `In a tool for cutting grooves in bearings, the Y.combination of an arbor, spaced-apart groove-cutting elements Vmovably mounted therein, a slide Y mounted .for longitudinal movement in said arbor and operatively connected `with said elements, means exteriorly of the arbor adaptedto translate saidslide whereby said elements may be movedinto and out of cut'tingpositions and means adj ustably mounted onthe ,arbor adapted to engage the ends of the bearing being grooved to retain actuation of said cutting elements, means for the tool in adjusted position.

4. In a tool for cutting grooves in bearings, the combination of an arbor, groove-cutting elements mounted therein and movable in a direction transversely of the arbor, a slide mounted for longitudinal movement in said arbor and having inclined portions engaged with said elements, means exteriorly of the arbor adapted to translate said slide to control feeding movement of the cutting elements, and abutment collars mounted on the arbor adapted to engage the ends of the bearing to prevent longitudinal movement of the arbor when in use. Y

5. In a tool for cutting grooves in bearings, the combination of an' arbor, groove-cutting elements mounted in said arbor and each having a. notch therein, a slide mounted for longitudinal movement in said arbor and Vhaving y inclined portions engaged with the notches in said elements, rotatable means exteriorly of the arbor operatively connected with said slide and whereby the latter maybe actuated to control feeding movement of the vcutting elements, and means mounted on the arbor.

adapted to engage the bearing ends to prevent longitudinal movement of the arbor when in use.

6. In a tool for cutting grooves 1n bearings,

rotating said arbor, and guide means adjustably secured to said arbor to retain it in position in the bearing. Y

8. In a tool for cutting grooves in bearings, the combination of an arbor adapted to be inserted in a bearing and having spaced apart sockets therein, a groove-cutting element movably mounted in each socket and each provided with a notch having inclined walls, said arbor having open groove therein c extending lengthwise thereof, a slide movably mounted in said groove and having inclined surfaces engaged with the inclined walls of the notches in said elements, a stern connected with said slide and projecting from one end of the arbor, a nut received in threaded engagement with said stem, relative rotation of said nut causing said slide to move in the arbor whereby said cuttingelements also are moved, means for rotating said arbor, and

guide collars adjustably secured to the arbor i to retain it in position in the bearing.

In witness whereof we have hereunto set our hands this lst day of August, 1929.

CHARLES H. CLEVELAND. CHARLES A. HEINE. JOHN T. ALLISON.

the combination of an arbor having spaced Y apart sockets therein, cutting elements movably mounted in said sockets and each hav ing a notch in one side thereof, said arbor also having a longitudinal open groove, a flat slide movably mounted in said groove and having inclined portions engaged with the notches in said cutting elements, a threaded stem-having one end connected with said slide and having its other end projecting from one end of the arbor, and means received in threaded engagement with said stem whereby said stem and slide are moved in a direction lengthwise of the arbor to cause actuation of said cutting elements, movement of said slide in one direction causing the cutting terminals of said elements to be vmoved outwardly beyond the periphery of said arbor, and movement of the slide in the opposite direction retracting said elements. Y Y:

7. In a tool for cutting grooves in bearings, the combination of an arbor adapted to be inserted in a bearing and having spaced apart sockets therein arranged transversely thereof, a groove-cutting element movably mounted in each socket and each provided with a notch, said arbor having open groove therein extending lengthwise thereof, a flat slide movably mounted in said groove and having inclined portions engaged with the notches in said elements, Va stem connected with one end ofsaid slide and projecting from one end of the arbor, means adapted to translate said and adapted to be relatively rotated thereon, Y

' stem whereby said slide will be moved to cause i 

